EP3834212A1 - Manual close assist control mechanism - Google Patents
Manual close assist control mechanismInfo
- Publication number
- EP3834212A1 EP3834212A1 EP20749402.2A EP20749402A EP3834212A1 EP 3834212 A1 EP3834212 A1 EP 3834212A1 EP 20749402 A EP20749402 A EP 20749402A EP 3834212 A1 EP3834212 A1 EP 3834212A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- actuator
- armature
- winding
- closed
- switch assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title description 5
- 238000004804 winding Methods 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000005381 magnetic domain Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1844—Monitoring or fail-safe circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
- H01H33/38—Power arrangements internal to the switch for operating the driving mechanism using electromagnet
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/666—Operating arrangements
- H01H33/6662—Operating arrangements using bistable electromagnetic actuators, e.g. linear polarised electromagnetic actuators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/22—Polarised relays
- H01H51/2209—Polarised relays with rectilinearly movable armature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
- H01F7/1844—Monitoring or fail-safe circuits
- H01F2007/185—Monitoring or fail-safe circuits with armature position measurement
Definitions
- This disclosure relates generally to a method for closing an actuator in a magnetically actuated switch assembly and, more particularly, to a method for closing an actuator in a magnetically actuated switch assembly that includes commencing a closing operation of an actuator in the switch assembly using a manual actuation device.
- An electrical power distribution network typically includes a number of power generation plants each having a number of power generators, such as gas turbines, nuclear reactors, coal-fired generators, hydro-electric dams, etc.
- the power plants provide power at a variety of medium voltages that are then stepped up by transformers to a high voltage AC signal to be provided on high voltage transmission lines that deliver electrical power to a number of substations typically located within a community, where the voltage is stepped down to a medium voltage.
- the substations provide the medium voltage power to a number of three-phase feeder lines.
- the feeder lines are coupled to a number of lateral lines that provide the medium voltage to various distribution transformers, where the voltage is stepped down to a low voltage and is provided to a number of loads, such as homes, businesses, etc.
- loads such as homes, businesses, etc.
- Faults may create a short-circuit that increases the load on the network, which may cause the current flow from the substation to significantly increase, for example, several times above the normal current, along the fault path. This amount of current causes the electrical lines to significantly heat up and possibly melt, and also could cause mechanical damage to various components in the substation and in the network.
- Power distribution networks of the type referred to above typically include a number of switching devices, breakers, reclosers, interrupters, etc. that control the flow of power throughout the network.
- a vacuum interrupter is a switch that has particular application for these types of devices.
- a vacuum interrupter employs opposing contacts, one fixed and one movable, positioned within a vacuum enclosure. When the interrupter is opened by moving the movable contact away from the fixed contact the arc that is created between the contacts is quickly extinguished by the vacuum.
- a vapor shield is provided around the contacts to contain the arcing.
- the vacuum interrupter is encapsulated in a solid insulation housing.
- These types of vacuum interrupters are sometimes employed in fault interrupter devices, such as single-phase self-powered magnetically actuated reclosers.
- These types of magnetically actuated reclosers generally include a solenoid type actuator having an armature that is moved by an electrical winding to open and close the vacuum interrupter contacts, where the armature and a stator provide a magnetic path for the flux produced by the winding. The winding is de-energized after the actuator is moved to the open or closed position, and permanent magnets are used to hold the armature against a latching surface in both the open and closed position.
- Reclosers of this type automatically open the vacuum interrupter contacts in response to the detection of fault current, and are often coordinated with other reclosers and breakers so that the first recloser upstream of the fault is the only one that opens to limit the number of loads that do not receive power.
- the recloser opens in response to detecting a fault, it will close shortly thereafter to determine if the fault remains. If the fault current is detected again, then the recloser will automatically open again and remain open.
- a manual actuation device in connection with a magnetically actuated recloser of this type for manually closing and opening the vacuum interrupter contacts when no power is available to the recloser for electrically opening and closing the contacts.
- a live circuit such as on a utility pole
- the vacuum interrupter is in the open position
- power is not available because the contacts are open and unable to electrically close the vacuum interrupter
- the manual actuation device needs to be configured so that if a fault occurs in the circuit, or is present in the circuit when the vacuum interrupter is mechanically closed, the contacts will immediately open electrically as described above without the manual device interfering with the electrical operation of the actuator. Further, there may be occurrences where it is desirable to manually open the contacts when the vacuum interrupter is in operation without using the actuator.
- the armature When power is provided to the windings in a magnetically actuated recloser and the actuator is operated electrically, the armature will translate from one latching surface to another latching surface. If the armature is moved from the open position to the closed position by a manual activation device and not by powering the winding, the last magnetic state of the armature and the stator is for the open position, where the magnetic domains in the material are aligned in a way to support the open state. More particularly, when the armature is manually moved to the closed position the only magnetic force acting on the armature is produced by the permanent magnets through the stator and the armature that are magnetically polarized in the opposite direction.
- the following discussion discloses and describes a method for closing an actuator in a magnetically actuated switch assembly, where the actuator includes an armature and a winding, and, in one non-limiting embodiment, the switch assembly includes a manual actuation device coupled to one end of the armature and a movable terminal in a vacuum interrupter coupled to an opposite end of the armature.
- the method includes commencing a closing operation of the actuator using the manual actuation device to move the armature towards a closed latch position, detecting that the actuator is being manually closed, and energizing the winding to assist moving the armature to the closed latch position when the armature gets to a predetermined distance from the closed latch position.
- Figure 1 is a side view of an internal portion of a magnetically actuated switch assembly including a vacuum interrupter
- Figure 2 is an illustration showing an operation for manually closing an actuator in the switch assembly shown in figure 1 that includes providing an electrically assist.
- FIG 1 is a side view of a magnetic latching actuator operated switch assembly 10 including a vacuum interrupter 12, a solenoid or magnetic actuator 14 that electrically opens and closes the vacuum interrupter 12, and a manual actuation device 16 that manually opens and closes the vacuum interrupter 12, where an outer insulation housing of the vacuum interrupter 12 and an outer protective housing of the actuator 14 and the device 16 have been removed.
- the switch assembly 10 has particular application as a single-phase self-powered magnetically actuated fault recloser for use in medium voltage power distribution networks.
- the vacuum interrupter 12 includes an enclosure 18 defining a vacuum chamber 20, a fixed upper terminal 22 extending through a top end and into the chamber 20 and including a contact 24 and a movable lower terminal 26 extending through a bottom end and into the vacuum chamber 20 and including a contact 28, where a bellows 30 allows the movable terminal 26 to slide without affecting the vacuum in the chamber 20.
- the vacuum interrupter 12 is shown in the closed position where the contacts 24 and 28 are in contact with each other.
- the switch assembly 10 further includes a dielectric drive rod 36 extending through a spring 38, where one end of the drive rod 36 is connected to the lower terminal 26 and an opposite end of the drive rod 36 is connected to an armature 40 in the actuator 14.
- a dielectric drive rod 36 extending through a spring 38, where one end of the drive rod 36 is connected to the lower terminal 26 and an opposite end of the drive rod 36 is connected to an armature 40 in the actuator 14.
- the armature 40 is drawn upward, which also moves the rod 36 and the lower terminal 26 upward so that the contact 28 engages the contact 24, where continued movement of the armature 40 to a closed latch position against a latch surface 50 compresses the spring 38 to increase the force of the contact 26 against the contact 24.
- FIG. 2 is an illustration 60 showing an operation for assisting with the closing of the actuator 14 when it is being mechanically closed by the manual activation device 16 by providing a small amount of electrical power to the actuator 14, i.e., the winding 42, if available, during the manual closing operation so as to maintain a more reliable magnetic latch of the armature 40 in the closed position.
- Line 62 represents the position of the armature 40 when the actuator 14 is in the open latch position and the contacts 24 and 28 are open
- line 64 represents the position of the armature 40 when the actuator 14 is in the closed latch position and the contacts 24 and 28 are closed.
- Line 66 represents the position of the armature 40 over time as it moves from the open latch position to the closed latch position by operation of the mechanical device 16.
- Line 68 represents an electrical signal provided to the winding 42 over time to help move the armature 40 from the open latch position to the closed latch position, where the electrical signal is usually zero.
- Line 72 represents a maximum bounce of the armature 40 off of the latch surface 50 when the armature 40 impacts the surface during the closing operation, where a bounce region 70 is defined between the line 64 and the line 72.
- Point 74 represents the time that the contacts 24 and 28 are closed enough from movement of the armature 40 so that electrical power can be provided to the actuator 14 if there is available power, whether it be fault current or normal current, which occurs before the bounce region 70.
- the electrical power provided to the winding 42 also acts to align the magnetic domains of the ferrous material of the armature 40 and the stator 52, thus increasing the magnetic latch force provided by the permanent magnets 54 and 56 so that the armature 40 is more reliably latched to the surface 50, which provides more contact pressure between the contacts 24 and 28.
- the winding 42 is briefly energized in a direction that polarizes the armature and stator material so that it can support higher latching forces when in the closed state.
- the electrical pulse provided to the winding 42 is maintained for a short period of time after the armature 40 is in the closed latch position, where the power ramps down on line portion 82 to zero at point 84.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
- Motor And Converter Starters (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201962799415P | 2019-01-31 | 2019-01-31 | |
PCT/US2020/013852 WO2020159715A1 (en) | 2019-01-31 | 2020-01-16 | Manual close assist control mechanism |
Publications (4)
Publication Number | Publication Date |
---|---|
EP3834212A1 true EP3834212A1 (en) | 2021-06-16 |
EP3834212A4 EP3834212A4 (en) | 2022-04-20 |
EP3834212C0 EP3834212C0 (en) | 2023-07-19 |
EP3834212B1 EP3834212B1 (en) | 2023-07-19 |
Family
ID=71836637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20749402.2A Active EP3834212B1 (en) | 2019-01-31 | 2020-01-16 | Manual close assist control mechanism |
Country Status (9)
Country | Link |
---|---|
US (2) | US10964496B2 (en) |
EP (1) | EP3834212B1 (en) |
KR (1) | KR102316659B1 (en) |
AU (1) | AU2020215624B2 (en) |
BR (1) | BR112021003337B1 (en) |
CA (1) | CA3114933C (en) |
CO (1) | CO2021008305A2 (en) |
MX (1) | MX2021002123A (en) |
WO (1) | WO2020159715A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021113252A1 (en) * | 2019-12-05 | 2021-06-10 | S&C Electric Company | Low energy reclosing pulse test system and method |
US11710948B1 (en) | 2023-01-04 | 2023-07-25 | Inertial Engineering and Machine Works, Inc. | Underarm gang operated vacuum break switch |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1143805A (en) * | 1966-08-04 | |||
US3663906A (en) * | 1969-10-09 | 1972-05-16 | Gen Electric | Electric circuit breaker with magnetically assisted closing means |
US4032870A (en) * | 1975-09-15 | 1977-06-28 | General Electric Company | Electric circuit breaker with electromagnetic-assist means for opposing magnetic contact-separating forces |
US5912604A (en) * | 1997-02-04 | 1999-06-15 | Abb Power T&D Company, Inc. | Molded pole automatic circuit recloser with bistable electromagnetic actuator |
GB9727148D0 (en) * | 1997-12-22 | 1998-02-25 | Fki Plc | Improvemnts in and relating to electomagnetic actuators |
JP2000268683A (en) * | 1999-01-14 | 2000-09-29 | Toshiba Corp | Operating device for switch |
DE19910326C2 (en) * | 1999-03-09 | 2001-03-15 | E I B S A | Bistable magnetic drive for a switch |
US6198062B1 (en) * | 1999-05-17 | 2001-03-06 | Joslyn Hi-Voltage Corporation | Modular, high-voltage, three phase recloser assembly |
JP2002124162A (en) * | 2000-10-16 | 2002-04-26 | Mitsubishi Electric Corp | Switchgear |
US7215228B2 (en) * | 2001-06-01 | 2007-05-08 | Hubbell Incorporated | Circuit interrupting device with a turnbuckle and weld break assembly |
US7280019B2 (en) | 2003-08-01 | 2007-10-09 | Woodward Governor Company | Single coil solenoid having a permanent magnet with bi-directional assist |
JP4277198B2 (en) * | 2003-12-26 | 2009-06-10 | 株式会社日立製作所 | Vacuum switchgear |
US7064639B2 (en) | 2004-07-30 | 2006-06-20 | Delta Systems, Inc. | Electromagnetic latching switch |
EP2312604B1 (en) * | 2009-10-14 | 2013-03-13 | ABB Technology AG | Electrical device with a multi-chamber housing |
RU2529884C2 (en) * | 2009-12-18 | 2014-10-10 | Шнейдер Электрик Эндюстри Сас | Electromagnetic drive mechanism with magnetic clutch and release mechanism comprising such drive mechanism |
EP2976776B1 (en) * | 2013-03-18 | 2018-05-02 | ABB Schweiz AG | Magnetic actuating device for a current switching device |
JP5418715B1 (en) * | 2013-07-30 | 2014-02-19 | 株式会社安川電機 | Switch |
-
2020
- 2020-01-16 MX MX2021002123A patent/MX2021002123A/en unknown
- 2020-01-16 BR BR112021003337-8A patent/BR112021003337B1/en active IP Right Grant
- 2020-01-16 EP EP20749402.2A patent/EP3834212B1/en active Active
- 2020-01-16 KR KR1020217016059A patent/KR102316659B1/en active IP Right Grant
- 2020-01-16 US US16/744,809 patent/US10964496B2/en active Active
- 2020-01-16 WO PCT/US2020/013852 patent/WO2020159715A1/en unknown
- 2020-01-16 CA CA3114933A patent/CA3114933C/en active Active
- 2020-01-16 AU AU2020215624A patent/AU2020215624B2/en active Active
-
2021
- 2021-03-02 US US17/189,323 patent/US11417481B2/en active Active
- 2021-06-25 CO CONC2021/0008305A patent/CO2021008305A2/en unknown
Also Published As
Publication number | Publication date |
---|---|
MX2021002123A (en) | 2021-09-14 |
BR112021003337B1 (en) | 2022-02-01 |
BR112021003337A2 (en) | 2021-07-27 |
EP3834212C0 (en) | 2023-07-19 |
KR20210072104A (en) | 2021-06-16 |
US11417481B2 (en) | 2022-08-16 |
AU2020215624B2 (en) | 2021-05-20 |
EP3834212B1 (en) | 2023-07-19 |
US20200251294A1 (en) | 2020-08-06 |
CO2021008305A2 (en) | 2021-07-19 |
EP3834212A4 (en) | 2022-04-20 |
CA3114933C (en) | 2021-10-19 |
US10964496B2 (en) | 2021-03-30 |
WO2020159715A1 (en) | 2020-08-06 |
AU2020215624A1 (en) | 2021-03-04 |
KR102316659B1 (en) | 2021-10-22 |
US20210183601A1 (en) | 2021-06-17 |
CA3114933A1 (en) | 2020-08-06 |
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